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Dandy Dapter info needed
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Ken Layton
Jan 13, 2003, 1:57:01 PM1/13/03
to
I've got an old B&K 467 CRT restorer and I'm looking for contact info
for ordering a "Dandy Dapter" to use with my 467. Anyone have the name
& address & phone for the manufacturer of the Dandy Dapter?
for ordering a "Dandy Dapter" to use with my 467. Anyone have the name
& address & phone for the manufacturer of the Dandy Dapter?
Ken Layton
Olympia, Wash.
tomke...@gmail.com
Nov 22, 2015, 4:49:39 PM11/22/15
to
Percival P. Cassidy
Nov 22, 2015, 7:14:00 PM11/22/15
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Groups strikes again!
Perce
jurb...@gmail.com
Nov 22, 2015, 10:18:38 PM11/22/15
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I got a question. How did you find this original post ?
If I go looking for my old posts I never find shit. My scereen updates 30 threads at a time. What, SERIOUSLY, did you look for the dandy dapter up in the search box ? Or did Google send you here straight from the web search ? I am really curious.
This is not a putdown and I am not bitching, I would just like to know. And if you get here via Google, up st the upper right should be the date of the post to which you can reply. When it is really old, the people are usually gone.
However, there is nothing wrong with bringing something up out of the depths to add something of value. Older equipment is starting to show its value. People are paying thousands to have fifty year old stereo equipment restored.
this being a CRT tester though it is not as crucial, CRTs in TVs go bad and all you get is to know they are bad. If you restore them they do not last long whether you use them or not.
Now real good tube testers, I mean the kind with all kinds of calibration, gas tests and an english control - those are sought after. That is for that fifty year, err wait, sixty year old hifi and stereo equipment. What's more they do not just want a go/nogo, they want the emission, Gm and whatever quantified for matching.
The 467 was unique in that it tested the three guns sequentially. For whatever reason they wanted to vary the G2 voltage for each gun even though they were common in many CRTs. Whatever logic they used, they figured out a way to test the guns with separate G2 voltages.
To do this they used a ring counter running off the 60 Hz, which means they pulsed the guns at 20 Hz. the three G2 controls were switched by diodes and it made for a trilevel waveform usually, and the meters were switched in sequentially and read the beam current.
One of the reasons they did this maybe was to make sure they were measuring beam current and not just emission. They are not the same thing.
Fun. Cool. Now I have dumped some of my useless knowledge.
If I go looking for my old posts I never find shit. My scereen updates 30 threads at a time. What, SERIOUSLY, did you look for the dandy dapter up in the search box ? Or did Google send you here straight from the web search ? I am really curious.
This is not a putdown and I am not bitching, I would just like to know. And if you get here via Google, up st the upper right should be the date of the post to which you can reply. When it is really old, the people are usually gone.
However, there is nothing wrong with bringing something up out of the depths to add something of value. Older equipment is starting to show its value. People are paying thousands to have fifty year old stereo equipment restored.
this being a CRT tester though it is not as crucial, CRTs in TVs go bad and all you get is to know they are bad. If you restore them they do not last long whether you use them or not.
Now real good tube testers, I mean the kind with all kinds of calibration, gas tests and an english control - those are sought after. That is for that fifty year, err wait, sixty year old hifi and stereo equipment. What's more they do not just want a go/nogo, they want the emission, Gm and whatever quantified for matching.
The 467 was unique in that it tested the three guns sequentially. For whatever reason they wanted to vary the G2 voltage for each gun even though they were common in many CRTs. Whatever logic they used, they figured out a way to test the guns with separate G2 voltages.
To do this they used a ring counter running off the 60 Hz, which means they pulsed the guns at 20 Hz. the three G2 controls were switched by diodes and it made for a trilevel waveform usually, and the meters were switched in sequentially and read the beam current.
One of the reasons they did this maybe was to make sure they were measuring beam current and not just emission. They are not the same thing.
Fun. Cool. Now I have dumped some of my useless knowledge.
Ken Layton
Nov 23, 2015, 1:54:50 AM11/23/15
to
Yes, I still have occasion to use the B&K 467 since I still service arcade game monitors.
Bruce Esquibel
Nov 23, 2015, 8:06:52 AM11/23/15
to
jurb...@gmail.com wrote:
> This is not a putdown and I am not bitching, I would just like to know.
> And if you get here via Google, up st the upper right should be the date
> of the post to which you can reply. When it is really old, the people are
> usually gone.
They aren't using a newsreader, that is the problem.
> This is not a putdown and I am not bitching, I would just like to know.
> And if you get here via Google, up st the upper right should be the date
> of the post to which you can reply. When it is really old, the people are
> usually gone.
They are using a web browser pointing to https://groups.google.com.
I mean look at this one for example:
https://groups.google.com/forum/#!topic/sci.electronics.repair/EvILxBihP_0
The date isn't hidden but isn't part of the subject/author (it's off to the
right). The original post is from december 2003 with one reply the same or
next day, then bang, the 3rd response if from april this year.
Notice the author of that message is from @gmail.com.
You'll notice anyone replying to a post from years ago all have a gmail.com
email address.
Even though that thread is from 2003, you can still post a reply to it via
google, and that is the problem. Instead of keeping their version of usenet
utopia to themselves, they still send posts out of there.
It's stupid and they should shut that service down. Most of the search and
filters are gone and you really can't use it for research anymore, like when
dejanews was around.
-bruce
b...@ripco.com
Michael Black
Nov 23, 2015, 12:52:43 PM11/23/15
to
There was a period when I'd come home with a bit of "new" hardware from a
garage or rummage sale, and searching the usenet archive was pretty
useful. Often it would turn things up, unlike a websearch. And it would
generally avoid the "forsale" ads. But I guess that has rebalanced, now
lots of older information has gone online, and certainly I'm not finding
things via usenet anymore, for whatever reasons.
Michael
John Robertson
Nov 23, 2015, 1:51:17 PM11/23/15
to
Dandy-Dapter back when this first started, made calls to the city phone
directory, etc. even sent a letter to the last known address. Was
completely unable to contact the fellow so I send Ken a PDF of the manual.
The Dandy Dapter was mostly a chart of picture tubes and the required
connections using his tool - which was a series of plugs with labelled
grabbers that hook onto the pins of various picture tubes for testing.
We bought the kit back in the 90s for our shop and still use it from
time to time when we run across a tube that we haven't got a factory
adaptor for our B&K rejuvenator.
If anyone else needs a copy please let me know and I'll send it along.
If the original owner, Mr. Dandy or his estate, turns up I will happily
stop supplying copies - however at this time I consider this fits under
Fair Use of the copyright law (in Canada). Plus I am not charging for
the information.
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
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